I went looking for a report or comparion on v nose vs flat nose and didn't really find anything. You know how those 5th wheel rigs use an air deflector on the pull vehicle? I wonder if such a thing would be usefull for pulling a flat nose trailer, as those trailer types are much cheaper and more plentiful ...... but I haven't seen this idea ever used ...... and what about that rear fairing on the spaceshuttle when it's piggybacked on the 747 for transport. NASA must believe that's necessary, right? ok, maybe I'm going a bit "out there" (but not into space), but with fuel costs the way they are ........